/*
 * Copyright (c) 2009, 2011, okazoh_tk. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <string.h>

#include "alkes/media/DecoderFactory.h"
#include "alkes/media/ImageDecoder.h"

namespace alkes {

DecoderFactory::DecoderFactory(ImageBufferFactory* factory)
: factory_(factory)
{
}

DecoderFactory::~DecoderFactory()
{
}

ImageDecoder* DecoderFactory::createDecoder(const char* /*imagefile*/, PixelFormat /*format*/)
{
    return 0;
}

ImageDecoder* DecoderFactory::createDecoder(const void* /*address*/, uint32_t /*size*/, PixelFormat /*format*/)
{
    return 0;
}

struct FormatRecord {
    const char* ext;
    PixelFormat format;
};

#define MAKE_FORMAT_RECORD(ext, format) {ext, format}

static FormatRecord s_format_table[] = {
    MAKE_FORMAT_RECORD("png",   AL_FORMAT_PNG),
    MAKE_FORMAT_RECORD("jpg",   AL_FORMAT_JPEG),
    MAKE_FORMAT_RECORD("jpeg",  AL_FORMAT_JPEG),
    MAKE_FORMAT_RECORD("bmp",   AL_FORMAT_BITMAP),
};

PixelFormat DecoderFactory::guessFormat(const char* imagefile)
{
    PixelFormat format = AL_PIXEL_FORMAT_UNKNOWN;

    if (!imagefile)
        return format;

    const char* ext = 0;
    while (*imagefile) { if (*imagefile++ == '.') { ext = imagefile; } }

    if (ext)
    {
        int i;
        for (i = 0; i < (int)AL_LENGTH(s_format_table); ++i)
        {
            if (0 == strcmp(s_format_table[i].ext, ext))
            {
                format = s_format_table[i].format;
                break;
            }
        }
    }

    return format;
}

ImageBufferFactory* DecoderFactory::getImageBufferFactory() const
{
    return factory_;
}

}
